Watch it, Laz, I have
professional credentials. I have actually written a song that was performed -- once -- in a Chicago concert by a professional singing group (The BOBs). It was titled the "Transcendental Polka," and frankly, it may not have been worth a second performance :-)
This one is adapted from a very old drinking or camp song, "Seven Old Ladies Locked in the Lavatory." By the time I first heard it, probably in the 1950s, it was up to sixteen old ladies.